This is absolutely gorgeous!  A bit tricky to install - I recommend wiring the base, install it to ceiling to test length of mounting screws, then take off again. Install all the crystals (using gloves to avoid skin oils) then have someone hold the base, screw the crystal frame to the base (a bolt with a nut on the end hold it onto the base so it needs to be off the ceiling) and then hold the entire assembled fixture to the ceiling and put the screw caps on to secure it.